@tiff.wu: if you need a break from city sightseeing, hop on a 15 min ferry from Helsinki market square and explore this UNESCO world heritage site! Suomenlinna is one of the largest sea fortresses in the world, built in the 18th century. Sea views, tunnels, cafes, and so much space that you forget you’re minutes from downtown Helsinki Also, very windy. You’ve been warned 😉 #finland #europeansummer #visitfinland #helsinki #traveltiktok